US PATENT SUBCLASS 137 / 625.5
.~.~.~ Plural disk or plug

Current as of: June, 1999
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137 /   HD   FLUID HANDLING

561 R  DF  SYSTEMS {32}
625  DF  .~ Multi-way valve unit {12}
625.48  DF  .~.~ Reciprocating valve unit {2}
625.5.~.~.~ Plural disk or plug

DEFINITION

Classification: 137/625.5

(under subclass 625.48) Devices comprising oppositely facing seating surfaces for co-axially aligned seats.